24.4.—(1) The commissioner shall, on receiving the order and documents mentioned in rule 24.2 (appointment of commissioner), determine the place and the date of the diet for the examination of the witness to whom the order of the court relates, and shall give reasonable notice of those matters to all the parties concerned.
(2) The commissioner may vary or revoke his determination or adjourn the examination of any witness to such other place, at such other date and time, as he may determine.
(3) If, in the course of the examination of a witness under this rule, any question arises as to the admissibility of any evidence, the commissioner shall not determine any such question but shall allow the evidence subject to all questions of competency and relevancy.